Cook County Klima and Average Wetter
Klima of Cook County: average temperatures, rainfall and seasons month by month.
Klima in Cook County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Monat | Durchschnittliches Maximum | Durchschnittliches Minimum | Niederschlag | Bewertung |
|---|---|---|---|---|
| Januar | -2° | -8° | 73 mm | ★★☆☆☆ |
| Februar | 4° | -4° | 19 mm | ★★★☆☆ |
| März | 11° | 1° | 103 mm | ★★★☆☆ |
| April | 15° | 6° | 113 mm | ★★★☆☆ |
| Mai | 20° | 11° | 68 mm | ★★★★☆ |
| Juni | 26° | 18° | 126 mm | ★★★★☆ |
| Juli | 28° | 20° | 127 mm | ★★★★☆ |
| August | 27° | 19° | 116 mm | ★★★★☆ |
| September | 24° | 17° | 74 mm | ★★★★☆ |
| Oktober | 18° | 10° | 79 mm | ★★★★☆ |
| November | 10° | 3° | 68 mm | ★★★☆☆ |
| Dezember | 3° | -3° | 68 mm | ★★☆☆☆ |
Klima type: Kontinental. Quelle: Open-Meteo archive (ERA5).
Recent extremes in Cook County
Hochest and lowest readings observed in the last 3 years of reanalysis data – not all-time records.
How Cook County compares mit nearby places
Annual averages, and the difference against Cook County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Area Code 312 | 0 km | 11°C | about the same | 1034 mm |
| Chicago | 0 km | 11°C | about the same | 1034 mm |
| The Loop | 1 km | 11°C | about the same | 1034 mm |
| ZIP Code 60601 | 1 km | 11°C | about the same | 1034 mm |
| Wicker Park | 5 km | 11°C | about the same | 996 mm |
Beste Reisezeit Cook County
Go in Mai, Juni, August, September and Oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: Januar, Februar and Dezember – expect the least comfortable mix of heat, cold or rain.
What this means for Cook County
Today is slightly cooler than average for Oktober. The forecast high of 16°C is 1.9°C below the 18°C typical for this month.
Regen is very unlikely today – plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in Juni und August.
The gap between the warmest and coldest month averages 29°C.
What und pack, what und skip
- So.glasses, a brimmed hat and SPF 30+
- Layers – the daily swing is 20°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid Januar, Februar and Dezember – historically the least comfortable months here.
Zusammenfassung
Cook County is a county in Illinois. Cook County is a county in the United States. Die Einwohnerzahl beträgt etwa 5.1 million.
Aktuell sind es 10°C (50°F) in Cook County mit klar. Die gefühlte Temperatur beträgt 7°C. Heute liegen die Temperaturen zwischen 8°C und 16°C. Die Niederschlagswahrscheinlichkeit beträgt 0%. Die Bedingungen für Besichtigungen erreichen 8.7/10 – ausgezeichnet — jetzt los.
Die beste Reisezeit für Cook County is Mai, Juni, August, September and Oktober. Das Klima ist continental. Januar, Februar and Dezember sind meist die ungemütlichsten Mo.ate. Juli ist der wärmste Mo.at mit durchschnittlichen Höchstwerten um 28°C, während Januar ist der kälteste Mo.at mit Tiefstwerten um -8°C.
Der nächstgelegene große Flughafen ist O'Hare International Airport (ORD), about 25 km away. Zu den Sehenswürdigkeiten in der Nähe gehören Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.
Kurz gesagt. Today is slightly cooler than average for Oktober. The forecast high of 16°C is 1.9°C below the 18°C typical for this month. The best window und be outside is roughly 12 PM und 3 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Cook County today at 10/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Cook County
| Typ | County |
|---|---|
| State | Illinois |
| Land | Vereinigte Staaten |
| Kontinent | Nordamerika |
| Koordinaten | 41°52′41.2″N 87°37′47.3″W (41.8781, -87.6298) |
| Bevölkerung | 5.100.000 |
| Ortszeit | 12:33 AM (UTC-05:00) |
| Beste Monate | Mai, Juni, August, September and Oktober |
| Klima | Kontinental |
Wetter map for Cook County
Animated model layers. Pick a layer und load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Cook County
Every topic we hold for this place, and the same topic for the places around it.
Klima for related places
Frequently asked questions
Where is Cook County?
Cook County is a county in Illinois. Its coordinates are 41.8781, -87.6298. It lies in Nordamerika.
What is the weather like in Cook County jetzt?
It is currently 10°C (50°F) mit klar. Luftfeuchtigkeit is 69% and wind is 12 km/h.
When is the best time und visit Cook County?
Mai, Juni, August, September and Oktober offer the most comfortable conditions in Cook County, which has a continental climate. Januar, Februar and Dezember are usually the hardest months for outdoor plans.
What time zone is Cook County in?
Cook County observes America/Chicago (UTC-05:00). The Ortszeit is 12:33 AM.
How many people live in Cook County?
Cook County has a population of approximately 5.1 million.
What is the nearest airport und Cook County?
The closest airports are O'Hare International Airport (ORD), 25 km away.
What are the top things und do in Cook County?
Popular options include Indiana Dunes National Park, Starved Rock State Park and Lake Michigan.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) – coordinates, hierarchy and facts. |
|---|---|
| Vorhersage and observations | Open-Meteo (ECMWF and national models). |
| Luftqualität and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Wetter Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing – the block is simply not shown. |
Last updated Oktober 5, 2026 at 12:33 AM Ortszeit. Live blocks refresh every 15 minutes; climate averages monthly.
